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Finding the Fourth Proportional to 768,878.34, 1,061,047.89 and 424,737.96

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Solution

The fourth proportional to 768,878.34, 1,061,047.89 and 424,737.96 is: 586,136.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,878.34 : 1,061,047.89 = 424,737.96 : x
  2. Step 2: Convert to fraction form
    768,878.34/1,061,047.89 = 424,737.96/x
  3. Step 3: Cross multiply
    768,878.34x = 1,061,047.89 × 424,737.96
  4. Step 4: Simplify right side
    768,878.34x = 450,667,316,260.90
  5. Step 5: Solve for x
    x = 450,667,316,260.90/768,878.34
  6. Step 6: Final answer
    x = 586,136.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.